Which two pieces of fossil evidence support the idea of continental drift_.sccm software install log file location Wegener believed this fact was one of the strongest pieces of evidence for his theory. In the above map, orange indicates the fossil remains of Cynognathus, a Triassic land reptile. Dark blue indicates fossil remains of the freshwater reptile Mesosaurus. Green indicates fossils of the fern Glossopteris, found in wisconsin aciss

Apr 23, 2018 · Early in the 20th century, a German geologist named Alfred Wegener proposed his theory of continental drift, which was a precursor to the modern theory of plate tectonics. Based on the similarity of fossils in Africa and South America, he proposed that these two continents were once joined together and that the Atlantic Ocean opened up between ... Jul 24, 2019 · Fossil remains of similar organisms on widely disparate continents support the theories of continental drift and plate tectonics. Similar fossil remains, such as those of the Triassic land reptile Lystrosaurus and the fossil plant Glossopteris, exist in South America, Africa, India, Antarctica, and Australia, which were the continents comprising Gondwanaland, one of the supercontinents that broke off from Pangaea about 200 million years ago. When rock layers were discovered with different magnetism than the original rock, it points to continental drift. The Mid Atlantic Ridge was the first piece of evidence to support Wegener’s Theory. 2 British Geologists, Vine and Matthews, discovered magnetic stripes or banding running parallel to the ridge in the 1960s. Sep 29, 2020 · Who Proposed the Continental Drift Theory? Continental Drift Theory Guide for UPSC. Who proposed the theory of continental drift? The answer to this question is Alfred Wegner in 1912. He was a geophysicist and meteorologist. He believed that this theory explained why look-alike flora and fauna and fossils can be found in different parts of the ... Prediction two: If the islands are of different age than coral reefs will be of different thickness. Validation: spot on, indeed coral is several km thick It is easy to see how geologists have been able to resist this floating notion for so long. The idea we somehow just lived on the crust of some custard...Wegener's theory of continental drift. Although the notion that continents drift was first suggested as far He expanded on his ideas in his 1915 book, The Origin of Continents and Oceans. Fossil evidence of intermediates remains sparse, but is consistent with the family tree that scientists have...B. continental drift C. natural selection D. earthquake development Question #10 The symbols found on the map below indicate where fossils have been found in the same layer of sediment. Each symbol indicates a different type of fossil. What do the locations of the fossils suggest? A. The continents' locations have remained constant throughout ... Continental drift is a historical, scientific theory. The theory was first proposed by Abraham Ortelius in 1596. It was fully developed by the German geologist and meteorologist Alfred Wegener in 1915. The theory said that parts of the Earth's crust move slowly on top of a liquid mantle of higher density.Theory of Continental Drift. By the 1950s, most scientists had accepted the idea as theory based on several pieces of evidence. Evidence to support continental drift: Continents fit together like puzzle pieces. Fossil evidence . Mountain (core rock) evidence. Mineral, rock, and glacial deposit evidence 2. Fossils:-Fossils-trace of an ancient organisms that has been preserved in rock.-Dinosaur fossils have been found in landmasses separated by oceans. 3. Climate:-Evidence of tropical plants has been found in the Arctic Ocean and glacier evidence in South Africa. proposed the Theory of Continental Drift. his ideas were not well. received (skepticism) Pangaea that continents were joined . evidence to support theory---similar rocks and fossils on separate continents. similar mountain ranges. puzzle These objects were important pieces of evidence that the Vikings had indeed reached America. Until the arrival of Europeans none of the Amerindian tribes knew how to make iron. In later years English governments used them to support their claims to own most of the east coast of North America. douluo dalu ii 216 Jun 22, 2020 · Like a jigsaw puzzle, the Earth’s crust has 15 or 20 separate pieces of minor and major plate tectonics. These pieces are the plate tectonics that ride on soft melted rock underneath. All continents were together as a supercontinent (Pangaea). Over time, these continents have broken apart and moved apart through continental drift. 1. What are the types of evidence you used to try to put the supercontinent together? 2.What do you think the idea of Continental Drift is? Continental Drift is the idea that _____ _____ 3. Which 2 continents have the most obvious fit of the coastlines? The two continents that fit best are _____. 4. Which fossil occurs on the most landmasses? ...continental drift except that - The continents seem to fit together like pieces of a puzzle There are similar fossils on different continents Mountain ranges in South America and Africa line up The North Pole and Antarctica are covered with ice Question 7 (4 points) Which provides the best evidence...Another important piece of evidence in the Continental Drift theory is the fossil relevance. There are various examples of fossils found on separate continents and in no other regions. This indicates that these continents had to be once joined together because the extensive oceans between these land...Evidence of six mass extinctions can be seen in the fossil record. There are two primary events that are believed to have contributed to these mass extinctions. The movement of the Earth's surface via continental drift is one such event. Plate tectonics provides the explanation for why continental drift occurs. Oct 01, 2020 · In 3-5 sentences, Identify and describe the fossil evidence Wegener used to support the theories of continental drift and plate tectonics. science. Why did Alfred Wegener use fossils to support his continental drift theory?(1 point) Fossils were the only evidence available to Wegener. Fossils were familiar to him in his work as a meteorologist. The idea of continental drift really is an idea before its time. The idea was first put down in a more or less modern form by Alfred Wegener. In 1915, Wegener published an expanded version of an earlier book, which he called "The Origins of Continents and Oceans". Today, the major pieces of evidence for this theory can be broken down into the fossil record, embryology This is a series of skulls and front leg fossils of organisms believed to be ancestors of the modern-day horse. Thicker legs to support heavy weight and long metacarpals for swimming.The idea of continental drift really is an idea before its time. The idea was first put down in a more or less modern form by Alfred Wegener. In 1915, Wegener published an expanded version of an earlier book, which he called "The Origins of Continents and Oceans". Evidence that Wegener used to support his theory included the way that the continents seemed to fit together like puzzle pieces, the location of similar fossils on separate continents, the presence of fossils from differing climatic conditions than were currently present in an area, and the presence of similar rock structures found on different continents. Carbonized fossil remains (also called carbonizations) may result when organisms are rapidly buried Carbonized remains are thin, approximately two-dimensional films of carbon preserved on a flat Most fossils that exhibit "soft part" preservation are carbonizations. Examples include many plant fossils...Claim-- The rock and fossil evidence found on all the continents supports Wegener's theory of continental drift. Evidence-- Wegener noticed that South America and Africa appear like they could fit like puzzle pieces and he found that there look-alike animal and plant fossils and similar rock formations found on different continents. The idea of continental drift really is an idea before its time. The idea was first put down in a more or less modern form by Alfred Wegener. In 1915, Wegener published an expanded version of an earlier book, which he called "The Origins of Continents and Oceans". Mar 29, 2020 · Finding fossils of the Mesosaurus on the southern hemispheres of both continents is a further indication that the two continents were once together and later drifted apart. Another indication of continental drift is tectonic activity and seafloor spreading. Alfred Wegener gave many facts that help prove his Continental Drift theory. Wegener’s supporting facts include fossil evidence, land features, climate evidence, and sea floor spreading. In the beginning of Wegener’s research to prove his Continental Drift theory, he found clues from fossil evidence from millions of years ago. concrete elevator pit detail Usethe words in the box for ideas.attractive • bad · dark • funny • good • curly longold • serious short strongshort • strong • young. The Simple Present and the Present Continuous.1. Put the verb in brackets into the simple present or the presentcontinuous tense.1. You can't see Tom … now: he...See full list on eartheclipse.com From their point of view, the evidence supports the theory that modern humans migrated from a relatively small area in Africa Paleoanthropologists admit that, to date, the oldest fossil remains of modern Homo sapiens have been found in Africa, with С It didn't generally make use of new ideas.Look at the coded areas on the map that shows fossil and geological evidence found on the landmasses. The fossil remains provide you with hints as to how to put the continents together. In addition to the fossil evidence is a coded area that shows mountain chains that have the same geology from one continent to another. 3.0 Landforms provide evidence of change 3.1 Continental Drift Continents On The Move Alfred Wegener collected evidence to explain the various shapes of the continents and how they were all together at one time. Along with the fossils, climate similarities, and the interlocking shapes of the continents, Wegener concluded that the continents were Wegener's model was named continental drift. Wegener proposed in his theory that the Pangaea broke apart and the sections thus formed are the present day continents. The scientific evidences which support the continental drift are biological evidence, continuity of geologic features and... joe imakando jet Continental Drift and the Bible The Bible framework for earth history makes no statement about continental splitting, so it is unnecessary and unwise to take a "Biblical" position on the question. When God created the land and sea, the waters were "gathered together unto one place" ( Genesis 1:9 ), which may imply one large ocean and one large ... there is nothing lef t but to conclude t hat the pieces were in fact joined in this way.” 6. 1927: Geologist Alexander du Toit observes rock layers on the western coast of Africa in the following sequence: basalt rock, shale contain-ing fossil reptiles, coal layers containing Glossopteris fossils, rocks con-taining Mesosaurus fossils, and ... How does fossil evidence prove continental drift? What did the fossil evidence show? It was the first piece of evidence that continents are embedded in something bigger. They've kept a thorough record documenting the species and location. Geologists found two very interesting facts18. Summarizing Describe the evidence that supported the hypothesis of continental drift. Continents fit like puzzle pieces Same rocks, rock formations, fossils found on different continents Climate data, glacier streak marks found in Africa and Australia 19. Applying Concepts Some people...List 3 pieces of evidence to support the endosymbiont theory. The half-life of carbon-14 is about 5600 years. A fossil with ¼ the normal proportion of C. 14 is probably _____ years old.Answer the following using the diagram below: a common ancestor for D & F. most closely related species. least related species. new species C arises at this point Feb 11, 2017 · According to the theory of continental drift, the world was made up of a single continent through most of geologic time. That continent eventually separated and drifted apart, forming into the seven continents we have today. The first comprehensive theory of continental drift was suggested by the German meteorologist Alfred Wegener in 1912. The ... Evidence for continental drift can also be found in fossils and rocks. For example, similar fossils have been found along the matching coastlines of South America and Africa. The organisms that formed these fossils could not have traveled across the Atlantic Ocean. Therefore, the two continents must once have been joined together. Alfred Wegener's fossil evidence for continental drift is shown on the cut-outs. 3. Try to logically piece the continents together so that they form a giant During his long convalescence, Wegener was able to fully develop his ideas into the Theory of Continental Drift, detailed in a book titled Die...Look at the coded areas on the map that shows fossil and geological evidence found on the landmasses. The fossil remains provide you with hints as to how to put the continents together. In addition to the fossil evidence is a coded area that shows mountain chains that have the same geology from one continent to another. They are to create a new world that shows Alfred Wegener’s 3 key pieces of evidence that he used to come up with for the Continental Drift Theory. The need to show that the continents fit together like puzzle pieces, that there was fossil evidence found on separate continents, and that landforms matched up on each continents. idea was far fetched, he began to look for more evidence. In 1915, after researching and collecting evidence to support his hypothesis, Alfred Wegener introduced the theory of continental drift in his book, The Origin of Continents and Oceans. Wegner suggested that at one time in Earth’s history, the continents were joined to form Evidence for Continental Drift Check Your Understanding Checking Concepts 1. What is a supercontirent? 2. List three pieces of evidence that Indicate that continental drift occurred In the distant past. 3. Briefly describe two pieces of evidence that suggest that Antarctica was once located farther from the South Pole than It Is today. 4. –Paleoclimatic evidence Evidence for Continental Drift • Continental fit –Continental crust matches oceanic crust at the continental slope Fossil evidence • The same fossils are found in both South America and Africa • Fresh water fish cannot migrate through oceans • Swamp evidence is found in Antarctica Fossil evidence • The same fossils are found in both South America and Africa outdoor carpet for boat docks Plate tectonics helps explain the theory of Continental Drift. That theory states about 175 million years ago all the continents of the earth moved together in a single giant landmass. Scientists have looked for evidence to support the idea that the land was once joined, and use several factors in their studies. Continental drift is supported by scientific evidence. When Alfred Wegner first proposed the idea that a continent could move across an ocean, people thought he was crazy. He needed evidence such as fossils found on different continents, the matching shapes of the continents, rock evidence from different continents that Q. How does fossil evidence support Wegener's hypothesis of continental drift? Fossils are found in areas where the present-day climate could not have supported the organisms that made the fossils. Similar fossils of giant, land-dwelling dinosaurs are found on continents separated by oceans.Alfred Wegener is most famous for his work on continental drift, but it's not generally known that he was an atmospheric physicist whose specialty was polar meteorology, that he did work in glaciology on three different expeditions to Greenland, and that his theory of Continental drift, first developed in 1912 was progressively transformed from ... Continental Drift 1.) The “father” of the Continental Drift theory is Alfred Wegener, a German scientist who believe that the continents were once all connected, creating one super continent called Pangaea. 2.) He published his theory in 1915. 3.) Alfred Wegener's fossil evidence for continental drift is shown on the cut-outs. 3. Try to logically piece the continents together so that they form a giant During his long convalescence, Wegener was able to fully develop his ideas into the Theory of Continental Drift, detailed in a book titled Die...Geophysicist Jack Oliver is credited with providing seismologic evidence supporting plate tectonics which encompassed and superseded continental drift with the article "Seismology and the New Global Tectonics", published in 1968, using data collected from seismologic stations, including those he set up in the South Pacific. Continental drift is supported by scientific evidence. When Alfred Wegner first proposed the idea that a continent could move across an ocean, people thought he was crazy. He needed evidence such as fossils found on different continents, the matching shapes of the continents, rock evidence from different continents that Two fossils in particular served as good evidence for the idea that the continents were once joined but have since separated: Glossopteris and Mesosaurus. Glossopteris is a seed plant that appeared suddenly during the Permian period and rapidly spread throughout Gondwana, the landmass which later became South America, Australia, Africa and ... Instead, Wegener proposed that the animal lived within the rivers and lakes of a singular landmass which later broke apart. Other fossil evidence also supports the theory of continental drift. Feb 11, 2017 · According to the theory of continental drift, the world was made up of a single continent through most of geologic time. That continent eventually separated and drifted apart, forming into the seven continents we have today. The first comprehensive theory of continental drift was suggested by the German meteorologist Alfred Wegener in 1912. The ... The Fossil Record Many pieces of evidence support the theory that birds and dinosaurs are related. One such piece of evidence, the fossil record, is the accumulation of all fossilized remains that scientists have collected around the world. However, while the fossil record provides evidence to support the theory of common ancestors Wegener's model was named continental drift. Wegener proposed in his theory that the Pangaea broke apart and the sections thus formed are the present day continents. The scientific evidences which support the continental drift are biological evidence, continuity of geologic features and...Evidence that Wegener used to support his theory included the way that the continents seemed to fit together like puzzle pieces, the location of similar fossils on separate continents, the presence of fossils from differing climatic conditions than were currently present in an area, and the presence of similar rock structures found on different continents. a. How do the continental coastlines support the Theory of Continental Drift (Pangaea Theory)? b. Explain how fossil distribution supports the Theory of Continental drift. c. How do distinctive rock strata support the Theory of Continental Drift? d. How does coal distribution support the Theory of Continental Drift? Part C: Plate Tectonics biomes quiz pdf Jan 23, 2018 · Continental Drift: It is the process of movement of Earth’s crust on the liquid core. Meteorology: The study of Earth’s atmosphere is called meteorology. The folks involved in Weather Processing, Forecasting, etc. are called Meteorologists. They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils. fit of the continents As far back as the voyages of exploration of the New World in the 16th and 17th centuries...These objects were important pieces of evidence that the Vikings had indeed reached America. Until the arrival of Europeans none of the Amerindian tribes knew how to make iron. In later years English governments used them to support their claims to own most of the east coast of North America.Dec 14, 2020 · In fall of 2019, exactly zero scientists were studying COVID‑19, because no one knew the disease existed. The coronavirus that causes it, SARS‑CoV‑2, had only recently jumped into humans and ... 2.A.3 Evidence for Continental Drift. Чтобы просмотреть это видео, включите JavaScript и используйте веб-браузер, который поддерживает видео в So, again he took the distribution of fossil species, one more bit of evidence that suggest his reconstruction of Pangia made sense.The two continents look like pieces of a jigsaw. Alfred Wegner thought that this meant that the continents where moving. They had once been joined together. He looked for evidence which was recorded in their rocks. In 1912 Wegner presented the idea of continental drift and his supporting evidence to a meeting of the Geological Society of Frankfurt. used falcon f lite fl 14 Fossil Evidence In addition to seeing the similarities in the coastlines of the continents, Wegener found other evidence to support his hypoth-esis. He reasoned that if the continents had once been joined, fossils of the same plants and animals should be found in areas that had once been connected. Wegener knew that identical fossils Evidence of six mass extinctions can be seen in the fossil record. There are two primary events that are believed to have contributed to these mass extinctions. The movement of the Earth's surface via continental drift is one such event. Plate tectonics provides the explanation for why continental drift occurs. An important piece of plate tectonic theory is the continental drift idea. This was developed in the early part of the 20th century, mostly by a single scientist, Alfred Wegener. His hypothesis states that continents move around on Earth's surface and that they were once joined together as a single...DOWNLOAD THE WORKSHEET AT:https://www.mikesammartano.com/science/A brief introduction to Alfred Wegener's theory of continental drift, which would lay the gr... 7 EVIDENCE (CON'T)  Fossils: A plant called glossopteris (a swamp plant) found on 5 different continents.  South America, Africa, India, Australia, and Antarctica. ESSENTIAL QUESTION:  Justify the different pieces of evidence used to support the theory of continental drift?"1. Which of the following was NOT used in support of the continental drift hypothesis? (1 point).a. fossil evidence. b. paleomagnetism. c. ancient climate. d. fit of South America and Africa. 2. What was the main reason Wegener’s continental drift hypothesis was rejected? (1 point). a. He was not well liked by other scientists.. b. Scientists discovered the fossils of many identical-appearing species on widely separated continents. They had two theories for this. The actual connection between the continental fit (the idea that continents fit together like the pieces of a jigsaw puzzle) was first proposed in 1858 by Antonio...Married in 1930 to Max Mallowan, an eminent archaeologist, Christie spent two decades living on excavation sites in the Middle East, writing her crimenovels and helping out with her husband's work.The idea of continental drift really is an idea before its time. The idea was first put down in a more or less modern form by Alfred Wegener. In 1915, Wegener published an expanded version of an earlier book, which he called "The Origins of Continents and Oceans". Correct answers: 2 question: Which two pieces of fossil evidence support the idea of continental drift? A) Bacteria and petrified wood B) Glossopteris and bacteria C) Lystrosaurus and Glossopteris D) Petrified wood and Tyrannosaurus Continental Drift and Plate Tectonics Continental Drift As far back as 1620, Francis Bacon spotted that the west coast of Africa and the east coast of South America looked as if they would fit together, like pieces of a jigsaw puzzle. With his death, the Continental Drift Theory was quietly swept under the rug. Why Was Alfred Wegener's Continental Drift Theory Rejected? Alfred Wegener collected diverse pieces of evidence to support his theory, including geological “fit” and fossil evidence. It is important to know that the following specific fossil evidence was not Page 1/2 Nov 21, 2008 · To him, the presence of identical fossil species along the coastal parts of Africa and South America was the most compelling evidence that the two continents were once joined. And Continental drift is the movement of the Earth's continents relative to each other. Causes for continental drift. In 1928, Arthur Holmes, proposed that the mechanisms of thermal convection in the mantel were the driving forces of continental drift. He proposed that subcrustal convection currents will pull two halves of continent apart causing mountain building in the front, where currents are descending and new formation of ... Fossil evidence for Pangaea includes the presence of similar and identical species on continents that are now Paleomagnetic study of apparent polar wandering paths also support the theory of a The theory of Continental Drift, created by Alfred Wegener, explained how the continents shifted Earth's... shai donkey deromeScientists discovered the fossils of many identical-appearing species on widely separated continents. They had two theories for this. First, they theorized that separate species developed identically across the far-flung continents, a notion that was highly unlikely. The second theory was that the continents had been in contact with each other millions of years ago, and had somehow drifted apart. Instead, Wegener proposed that the animal lived within the rivers and lakes of a singular landmass which later broke apart. Other fossil evidence also supports the theory of continental drift. Feb 06, 2018 · Fossil evidence is critical when it comes to theorizing about when, where and how the continents merged or separated. If you find similar-looking fossil remains from the same geologic time on two separate continents, there's a good chance that those landmasses were linked together at some point. B) Only continental drift theory explains why climates on the continents have changed over time. C) Only plate tectonics theory explains the patterns of earthquakes and volcanic eruptions on Earth. D) Only continental drift theory explains why the coastlines of the continents seem to match. Explain the one piece of evidence that Wegener used to determine Continental Drift was fossil Pass around fossils or pictures of fossils. Give them a general understanding of fossils. For example: What two continents did Alfred Wegener first look at and wonder if they would fit together... competitive programming 3 pdf github The puzzle-like fit of the continents, along with fossil, climate, and rock clues, were the main types of evidence supporting We gener’s hypothesis of continental drift. Rocks and rock structures found in parts of the Appalachian Mountains of the east- ern United States are similar to those found in Greenland and western Europe. List 3 pieces of evidence to support the endosymbiont theory. The half-life of carbon-14 is about 5600 years. A fossil with ¼ the normal proportion of C. 14 is probably _____ years old.Answer the following using the diagram below: a common ancestor for D & F. most closely related species. least related species. new species C arises at this point Plate tectonics helps explain the theory of Continental Drift. That theory states about 175 million years ago all the continents of the earth moved together in a single giant landmass. Scientists have looked for evidence to support the idea that the land was once joined, and use several factors in their studies. A comprehensive database of continental drift quizzes online, test your knowledge with continental drift quiz questions. TRUE or FALSE Alfred Wegener's idea of continental drift was readily accepted upon first State one form of evidence that supports the inference that Pangaea existed.Oct 01, 2020 · In 3-5 sentences, Identify and describe the fossil evidence Wegener used to support the theories of continental drift and plate tectonics. science. Why did Alfred Wegener use fossils to support his continental drift theory?(1 point) Fossils were the only evidence available to Wegener. Fossils were familiar to him in his work as a meteorologist. A fossil is “a remnant, impression, or trace of an organism of past geologic ages that has been preserved in the earth’s crust.” (Merriam Webster). In the example at right, death (1) is followed by burial in sediments (2), keeping the skeleton from being dismembered by scavengers or broken apart by currents. Today, the major pieces of evidence for this theory can be broken down into the fossil record, embryology This is a series of skulls and front leg fossils of organisms believed to be ancestors of the modern-day horse. Thicker legs to support heavy weight and long metacarpals for swimming.Most earthquakes are caused by large-scale movements of the Earth's lithospheric plates. and occur at the boundaries between the plates. Experts recognize seven to twelve major plates and a number of smaller ones. The plates take their names from continents (the North American plate): from oceans...Jun 19, 2018 · EVIDENCE FOR CONTINENTAL DRIFT THEORY Experimentation/ Investigation: •Rock Formation •Fossils •Climate 5. PANGEA PUZZLE ACTIVITY G RO U P C L E A N E R S 1 0 M I N U T E S 6. • You will be piecing together a puzzle of the supercontinent Pangea based on fossil and rock evidence on the present day continents. • 1. passenger train Sep 06, 2012 · Wegener’s theory was party based on the observation that the large landmasses of Earth fit nicely together like a puzzle but it was also supported by evidence of the same fossilised plants on... Continental drift is supported by scientific evidence. When Alfred Wegner first proposed the idea that a continent could move across an ocean, people thought he was crazy. He needed evidence such as fossils found on different continents, the matching shapes of the continents, rock evidence from different continents that Get My Drift: When Wegener Moved Continents. Continents move or drift overtime. Quebec touched Spain. Brazil fit under Ghana and Nigeria in West Africa –150 million years ago. But it was only 100 years ago that a scientist from Berlin, Alfred Wegener, proposed the idea of continental drift. It was January 1912. Over the course of this essay I will review some of the evidence that support continental drift, such as fossil records and mountain ranges. One of the strongest pieces of evidence is Continental break up/fit, this is the idea that the continents were once joined together. Correct answers: 2 question: Which two pieces of fossil evidence support the idea of continental drift? A) Bacteria and petrified wood B) Glossopteris and bacteria C) Lystrosaurus and Glossopteris D) Petrified wood and Tyrannosaurus Jun 22, 2020 · Like a jigsaw puzzle, the Earth’s crust has 15 or 20 separate pieces of minor and major plate tectonics. These pieces are the plate tectonics that ride on soft melted rock underneath. All continents were together as a supercontinent (Pangaea). Over time, these continents have broken apart and moved apart through continental drift. The continental block broke apart and for Wegener it is obvious that “South America must have lain alongside Africa and formed a unified block which was split in two […]; the two parts must then have become increasingly separated over a period of millions of years like pieces of cracked ice floe in water”56. pledge of allegiance music sheet -8Ls